Write, Bureaucrats, Administrators
4,332
edits
How:Write scripts in JavaScript for Memento: Difference between revisions
How:Write scripts in JavaScript for Memento (view source)
Revision as of 07:04, 24 April 2021
, 24 April 2021no edit summary
mNo edit summary |
mNo edit summary |
||
| Line 8: | Line 8: | ||
* Shared code for use by trigger & action scripts | * Shared code for use by trigger & action scripts | ||
* A custom data source script to guide source data to the appropriate destination fields | * A custom data source script to guide source data to the appropriate destination fields | ||
== JavaScript field == | |||
Like the Memento Calculation field type that game before it, the JavaScript field exists to produce ("return") a value calculated with an ''expression'', which is a formula consisting of ''constants'', ''variables'', ''operators'', and possibly ''statements''. | |||
==== Example simple expression scripts ==== | |||
:;123: the value ''a hundred and twenty-three'' | |||
:;"Memento": the characters ''M e m e n t o'' as a string | |||
:; 2 * currentWeight: If currentWeight is 23 lbs, then 46 lbs | |||
:; (hours * 60) + 10:If hours is 5 and minutes is 10, then 310 | |||
==== Terminology ==== | |||
:; Constant:a value that has a string (text) value or a numeric (number) value. | |||
<small> | |||
::; String:"This is a string of textual characters" | |||
::; Number:123 or 3.14 or -28.5 | |||
::; Symbol:a name representing a constant value, like ''pi'', ''x'', ''tareWeight'', or ''surname'' | |||
</small> | |||
:; Variable:a name representing a value that may change over time, like ''sum'', ''currentValue'', or ''orderDate'' | |||
:; Operator: one or more characters that represent the value of other values that go together in some fashion to determine a result, like '''+''' for ''plus'' or '''-''' for ''minus'' or '''*''' for ''multiplied by'' or '''/''' for ''divided by''. | |||
::Some operators are made up of other operators used in combination, like '''<=''' ''for less than or equal to'' or '''&&''' for ''and also''. | |||
== Trigger script == | == Trigger script == | ||